Show HN: Lensboy – Lightweight camera calibration with spline distortion models

[robertleoj]

I do a lot camera calibration.

As my need for accuracy increased, I started using mrcal, a great camera calibration tool. But I found it didn't fit my workflow well in terms of workflow and as a software dependency.

What I wanted from a calibration library was:

Accuracy (obviously)

Trivial dependency, both calibration time and runtime

Simple and notebook-friendly python API

Support for both OpenCV and spline distortion models

Great built-in analysis tools

Board warp estimation

Outlier filtering

So that's what I built!

Would love feedback from other robotics / computer vision folks.

[dima55]

Hello! I'd love it if this and mrcal could work together. Do you support mrcal .cameramodel files? If not, can you do that? Is your splined representation compatible with the mrcal splined stereographic model? If not, can it? Is your splined lens representation better in some way? If so, should mrcal use some of that logic? I didn't see any documentation about it. If you think the mrcal distribution methods could be improved, and are willing to help improve it, I would be very amenable. Let's collaborate to make both projects better!